时间:2019-01-08 作者:英语课 分类:大学四六级阅读


英语课

   英语语法中有一部分叫做数字,数字又分为基数词和序数词,这些你的概念都很模糊?那你来对了,这篇文章可以完美解决你的问题。


  表示数目多少或顺序多少的词叫数词,数词分为基数词和序数词。表示数目多少的数词叫基数词;表示顺序的数词叫序数词。
  一、基数词
  1)基数词写法和读法: 345 three hundred and forty-five;
  2)基数词一般是单数形式,但下列情况,常用复数:
  a. 与of 短语连用,表示概数,不能与具体数目连 用,如scores of people 指许多人;
  b. 在一些表示"一排"或"一组"的词组里;
  如:They arrived in twos and threes. 他们三三两两的到达了。
  c. 表示"几十岁";
  d. 表示"年代",用 in +the +数词复数;
  e. 在乘法运算的一种表示法里,如:3 x 5 = 15 Three fives is (are) fifteen.
  二、序数词
  序数词的缩写形式: first---1st second---2nd thirty-first---31st三、 数词的用法
  1)倍数表示法
  a. 主语+谓语+倍数(或分数)+ as + adj. + as
  I have three times as many as you. 我有你三倍那么多。
  b. 主语+谓语+倍数(分数)+ the size (amount,length…) of…
  The earth is 49 times the size of the moon. 地球是月球的49倍。
  c. 主语+谓语+倍数(分数)+ 形容词(副词)比较级+ than…
  The grain output 1 is 8 percent higher this year than that of last year.
  今年比去年粮食产量增加8%。
  d. 还可以用by+倍数,表示增加多少倍
  The production of grain has been increased by four times this year.
  今年粮食产量增加了4倍。
  2)分数表示法
  构成:基数词代表分子,序数词代表分母。分子大于1时,分子的序数词用单数,分母序数词用复数:
  1/3 one-third ; 3/37 three and three-sevenths.

n.产量,输出,输出功率,输出端;vt.输出(信息等)
  • Grain output reached a new high in the three years.谷物产量达到三年中最高水平。
  • The chart showed us the global output of a factory.这张图表展示了一个工厂的总产量。
标签: 英语四级
学英语单词
-laik
A. S. A. R.
aldis lamp
aliphatic sesquiterpene
allocation of well rates
Anaplasma centrale
anomalous trichromat
appeals courts
arteriae mesenterica superior
astern moving blade
awshucks
Bacillus actinoides
balance pan
bigram
byte operand
capsicum annuum longums
carack
cider
Clematis pseudopogonandra
compulsory trust
creeper gear
d'oeuvres
Daily Cut-Off
dairy lactic acid bacterium
dendropathology
dichroic coating
distinguishing test
doctors of optometry
DQM
drongo
ecolinguistics
electric osmosis
family pezizaceaes
favorable trade balance
Filiouri
French Communist Party
gaussian response
gel test
gilboform
give countenance to
Gyobyu Res.
handing of results
harping on the same string
hectic flush
horse-fish
hum modulation factor
hydrostatic weighting
i-paied
ICRU
in fyll rig
keel strake
kroichick
latexed
Liceales
linkage
lutescens
market target
mathur
medfords
neatlines
Nirvanil
Nolvik
nutrient chemistry
ochterus marginatus
omophagias
operating voltage in a system
oxide film insulation
paramilitary organization
phisical network
podetium(pl.podetia)
polarization of polymer
pore mushroom
portuguese escudoes
prefinalization
Ptinidae
Ptychosperma
pythonesses
radiating matter
rami apicalis
Red Indian
reinitiation site
resegregrate
residual shim
resorptions
round strand wire ropes
sea gravel
sensitizing center
silver grays
simple probability
Smilax mairei
speechread
superior cerbellar veins
Svensk Filmindustri
Tebingtinggi, Pulau
tetras
theares
thermal infrared imager
thin shell structure
towerlet
weedkiller
winding arrangement
Windows event log